Annual report pursuant to Section 13 and 15(d)

Fair Value Disclosures - Assets and Liabilities Measured at Fair Value (Details)

v3.19.3.a.u2
Fair Value Disclosures - Assets and Liabilities Measured at Fair Value (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Interest Rate Swap    
Assets:    
Interest rate swaps $ 5,500  
Liabilities:    
Interest rate swaps (3,700)  
Recurring | SERP    
Assets:    
SERP 1,792 $ 1,364
Recurring | Interest Rate Swap    
Assets:    
Interest rate swaps 5,549 10,638
Liabilities:    
Interest rate swaps (3,726) (799)
Recurring | Level 1 | SERP    
Assets:    
SERP 0 0
Recurring | Level 1 | Interest Rate Swap    
Assets:    
Interest rate swaps 0 0
Liabilities:    
Interest rate swaps 0 0
Recurring | Level 2 | SERP    
Assets:    
SERP 1,792 1,364
Recurring | Level 2 | Interest Rate Swap    
Assets:    
Interest rate swaps 5,549 10,638
Liabilities:    
Interest rate swaps (3,726) (799)
Recurring | Level 3 | SERP    
Assets:    
SERP 0 0
Recurring | Level 3 | Interest Rate Swap    
Assets:    
Interest rate swaps 0 0
Liabilities:    
Interest rate swaps $ 0 $ 0